Home / 12,220.74-18,333.81-4,429.35

Finding the Fourth Proportional to 12,220.74, 18,333.81 and 4,429.35

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Solution

The fourth proportional to 12,220.74, 18,333.81 and 4,429.35 is: 6,645.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,220.74 : 18,333.81 = 4,429.35 : x
  2. Step 2: Convert to fraction form
    12,220.74/18,333.81 = 4,429.35/x
  3. Step 3: Cross multiply
    12,220.74x = 18,333.81 × 4,429.35
  4. Step 4: Simplify right side
    12,220.74x = 81,206,861.32
  5. Step 5: Solve for x
    x = 81,206,861.32/12,220.74
  6. Step 6: Final answer
    x = 6,645.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.